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To get DC for welding, it is necessary to have either

To get DC for welding, it is necessary to have either Correct Answer Rectifier or motor-generator set

CONCEPT:

  • A rectifier is a device that converts an alternating current into a direct current.
  • A p-n junction can be used as a rectifier because it permits current in one direction only.
  • In half-wave rectifier, there is only one diode, so during the positive half cycle diode conducts and gives the output similarly in the negative half cycle diode don’t conduct and gives no output.

EXPLANATION:

  • Welding power supplies may use generators or alternators to convert mechanical energy into electrical energy.
  • In older machines, the electric motor is used to drive the generator or alternator.
  • Rotating generators or alternators naturally produce alternating current (AC) which is converted in to direct current (DC) using the rectifiers. 

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